Title:
WIND POWER GENERATION SYSTEM, AND CONTROL METHOD AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/048185
Kind Code:
A1
Abstract:
A control method for a wind power generation system. The wind power generation system comprises a motor and N power conversion circuits; the motor comprises N coil windings which are respectively electrically connected to the N power conversion circuits, wherein N is a positive integer not less than 2. The control method comprises: obtaining operating power of the motor; controlling cut-in of a coil winding according to the current operating power of the motor; if the current operating power of the motor is lower than the rated power of one coil winding, controlling one of the N coil windings to be cut in; and if the current operating power of the motor is higher than the rated power of one coil winding, controlling at least two of the N coil windings to be cut in. By means of the technical solution, cut-in/cut-out of a coil winding is optimized, aging of components can be slowed down, the overall service life is prolonged, the overall conversion efficiency can be effectively improved, grid-connected current harmonics are reduced, and the electric energy quality is improved. In addition, also provided are a device for implementing the control method, and the wind power generation system.
Inventors:
ZHANG LUHUA (CN)
MA CHENGBIN (CN)
LIU JIAMING (CN)
CHEN KUNMING (CN)
YU QING (CN)
GE HAOXIANG (CN)
LV TING (CN)
WU YANJUN (CN)
MA CHENGBIN (CN)
LIU JIAMING (CN)
CHEN KUNMING (CN)
YU QING (CN)
GE HAOXIANG (CN)
LV TING (CN)
WU YANJUN (CN)
Application Number:
PCT/CN2021/093614
Publication Date:
March 10, 2022
Filing Date:
May 13, 2021
Export Citation:
Assignee:
SHANGHAI ELECTRIC WIND POWER GROUP CO LTD (CN)
International Classes:
F03D7/04; H02P9/14
Foreign References:
| CN112145347A | 2020-12-29 | |||
| CN104660129A | 2015-05-27 | |||
| CN102278278A | 2011-12-14 | |||
| CN101498926A | 2009-08-05 | |||
| EP2703642A2 | 2014-03-05 | |||
| US7847427B2 | 2010-12-07 |
Other References:
See also references of EP 4209676A4
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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